OICC PRESS Photodetachment cross-section evaluation using asymptotic considerations Volume 11 (2017) Issue 2, May 2017 2022 12 26 Photodetachment cross-section evaluation using asymptotic considerations 10.1007/s40094-017-0252-1 EN Journal Article 2022 12 26 AbstractMathematical calculations are given concerning the evaluation of the negative ions photodetachment cross-section σdocumentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$sigma $$end{document}, into a so-called saturation regime. The interaction between a negative ion particle beam and a laser beam is examined under theoretical aspects. A quantitative criterion S is proposed to define the saturation threshold between the linear and the saturated domains, which are both present in this saturation regime. The asymptotic behaviours extracted at the low and high energy limits are used to determine this threshold quantitative criterion S and to evaluate also the photodetachment cross-section σdocumentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$sigma $$end{document}. The case of a symmetric gaussian photodetachment laser beam shape is examined according to the proposed formalism, which can be used either for the photo-detachment or photo-ionization processes, and could be potentially used into technological solutions for negative ion neutralisation processes (such as neutral beam injector) in the future fusion energy devices. Estimations onto the errors related to the use of this methodology are given.

OICC PRESS Degradation of bromophenol blue molecule during argon plasma jet irradiation Volume 11 (2017) Issue 2, May 2017 2022 12 26 Degradation of bromophenol blue molecule during argon plasma jet irradiation 10.1007/s40094-017-0251-2 EN Journal Article 2022 12 26 AbstractThe aim of this paper is to study degradation of a bromophenol blue molecule (C19H10Br4O5S) using direct irradiation of cold atmospheric argon plasma jet. The pH of the bromophenol blue solution has been measured as well as its absorbance spectra and conductivity before and after the irradiation of non-thermal plasma jet in various time durations. The results indicated that the lengths of conjugated systems in the molecular structure of bromophenol blue decreased, and that the bromophenol blue solution was decolorized as a result of the decomposition of bromophenol blue. This result shows that non-thermal plasma jet irradiation is capable of decomposing, and can also be used for water purification.

OICC PRESS Multifocal terahertz radiation by intense lasers in rippled plasma Volume 11 (2017) Issue 2, May 2017 2022 12 26 Multifocal terahertz radiation by intense lasers in rippled plasma 10.1007/s40094-017-0249-9 EN Journal Article 2022 12 26 AbstractThis paper presents a theoretical model for the generation of terahertz radiation by cosh-Gaussian laser beams of high intensity, which are capable of creating relativistic–ponderomotive nonlinearity. We find the components of the terahertz radiation for the relativistic laser plasma interaction, i.e. beating of the two lasers of same amplitude and different frequency in under dense plasma. We plot the electric field profile of the emitted radiation under the effect of lasers index. By creating a dip in peak of the incident lasers’ fields, we can achieve multifocal terahertz radiation.

OICC PRESS Fabrication of graded helical square tower-like Mn sculptured thin films and investigation of their electrical properties: comparison with perturbation theory Volume 11 (2017) Issue 2, May 2017 2022 12 26 Fabrication of graded helical square tower-like Mn sculptured thin films and investigation of their electrical properties: comparison with perturbation theory 10.1007/s40094-017-0242-3 EN Journal Article 2022 12 26 AbstractMn sculptured thin films were fabricated in form of graded helical square tower-like terraced sculptured Mn thin films (GHSTTS) using oblique angle deposition together with rotation of substrate about its surface normal with fixed rotation angle (90°) and a shadowing block which was fixed at the centre of the substrate holder. The anisotropy of the samples was examined by resistivity measurements at two orthogonal angles. Direct relationship is obtained between resistivity and the anisotropy of the produced samples which showed that both of these parameters increase with decreasing distance from the edge of the shadowing block. Simulation work using the perturbation theory produced results consistent with the experimental observations.

OICC PRESS Facile synthesis of luminescent carbon dots from mangosteen peel by pyrolysis method Volume 11 (2017) Issue 2, May 2017 2022 12 26 Facile synthesis of luminescent carbon dots from mangosteen peel by pyrolysis method 10.1007/s40094-017-0250-3 EN Journal Article 2022 12 26 AbstractCarbon dots (C-Dots) from mangosteen peel has been synthesized by pyrolysis method. Synthesis of C-Dots is done using precursor solution which is prepared from extract of mangosteen peel as carbon source and urea as passivation agent. C-Dots is successfully formed with absorbance spectra at wavelength 350–550 nm. Urea affects to the formed C-Dots, while the absorbance and the luminescent spectra are independent toward urea. C-Dots from extract of mangosteen peel has size in range ~2–15 nm. The absorbance peaks of C-Dots shows significant wavelength shift at visible region as the increasing of synthesized temperature. Shift of wavelength absorbance indicates the change of electronic transition of C-Dots. Meanwhile, the luminescent of C-Dots can be controlled by synthesized temperature as well. C-Dots luminescent were increasing as higher synthesized temperature. It was shown by the shift of wavelength emission into shorter wavelength, 465 nm at 200 °C, 450 nm at 250 °C, and 423 nm at 300 °C. Synthesized temperature also affects size of C-Dots. It has size ~10–15 nm at 200 °C, ~7–11 nm at 250 °C and ~2–4 nm at 300 °C. In addition, temperature corresponds to the structure of carbon chains and C–N configuration of formed C-Dots from mangosteen peel extract.

OICC PRESS Investigation of electromagnetic soliton in the Cairns–Tsallis model for plasma Volume 11 (2017) Issue 2, May 2017 2022 12 26 Investigation of electromagnetic soliton in the Cairns–Tsallis model for plasma 10.1007/s40094-017-0241-4 EN Journal Article 2022 12 26 AbstractThe nonlinear Schrödinger equation (NLS) that describes the propagation of high intensity laser pulse through plasma is obtained by employing the multiple scales technique. One of the arresting solution for NLS equation is soliton like envelope for vector potential that is called electromagnetic soliton. The type and amplitude of electromagnetic soliton (EM) depends on the distribution function of plasma’s particles. In this paper, distribution function of electrons obey the Cairns–Tsallis model and ions are assumed as stationary background. There are two flexible parameters, affect on the formation of EM soliton. By variation of nonextensive and nonthermal parameters, bright soliton could convert to dark one or versus. Due to positive kinetic energy, there are the limited region for nonextensive and nonthermal parameters as q > 0.6 and 0

OICC PRESS Effects of Landau damping on finite amplitude low-frequency nonlinear waves in a dusty plasma Volume 11 (2017) Issue 2, May 2017 2022 12 26 Effects of Landau damping on finite amplitude low-frequency nonlinear waves in a dusty plasma 10.1007/s40094-017-0248-x EN Journal Article 2022 12 26 AbstractThe effect of linear ion Landau damping on weakly nonlinear as well as weakly dispersive low-frequency waves in a dusty plasma is investigated. The standard perturbative approach leads to the Korteweg–de Vries (KdV) equation with a linear Landau damping term for the dynamics of the low-frequency nonlinear wave. Landau damping causes the wave amplitude to decay with time and the dust charge variation enhances the damping rate.

OICC PRESS Self-focusing of a high-intensity laser pulse by a magnetized plasma lens in sub-relativistic regime Volume 11 (2017) Issue 2, May 2017 2022 12 26 Self-focusing of a high-intensity laser pulse by a magnetized plasma lens in sub-relativistic regime 10.1007/s40094-016-0239-3 EN Journal Article 2022 12 26 AbstractInteraction of high power circularly polarized short laser pulses with a cold underdense magnetized thin plasma lens is analyzed in the sub-relativistic regime. The magnetic field is applied along the direction of the laser field propagation. The evolution equation of the beam spot size is derived and solved by making use of the variational principle approach method. The theoretical investigations reveal that not only the magnetized plasma lens more sufficiently decreases the laser spot size, but also the left-handed circularly polarized beam is more effectively focused by a magnetized plasma lens compared to the right-handed circularly polarized beam.

OICC PRESS Electron states in a sinusoidally deformed cylindrical quantum wire Volume 11 (2017) Issue 2, May 2017 2022 12 26 Electron states in a sinusoidally deformed cylindrical quantum wire 10.1007/s40094-017-0245-0 EN Journal Article 2022 12 26 AbstractElectron states in a sinusoidally deformed cylindrical nanowire are probed within the effective mass approximation. The nanowire is immersed in a homogeneous magnetic field applied parallel to the axis of the wire. The sinusoidal deformity affects quantum properties of electrons considerably. The deformity introduces energy dependence on the axial position, enhancing (decreasing) confinement energies in regions where the radius is narrower (wider). Analysis shows that the magnetic field attenuates these sinusoidal deformity-induced distortions on electron quantum properties

OICC PRESS Investigation of sensitivity and selectivity of ZnO thin film to volatile organic compounds Volume 11 (2017) Issue 2, May 2017 2022 12 26 Investigation of sensitivity and selectivity of ZnO thin film to volatile organic compounds 10.1007/s40094-017-0253-0 EN Journal Article 2022 12 26 AbstractThis research addresses a detailed study on the sensitivity and selectivity of ZnO thin film to volatile organic compound (VOC) vapors that can be used for the development of VOC sensors. The ZnO thin film of 100 nm thickness was prepared by post-annealing of e-beam evaporated Zn thin film. The sample was structurally, morphologically, and chemically characterized by X-ray diffraction and field emission scanning electron microscopy analyses. The sensitivity, selectivity, and detection limit of the sample were tested with respect to a wide range of common VOC vapors, including acetone, formaldehyde, acetic acid, formic acid, acetylene, toluene, benzene, ethanol, methanol, and isopropanol in the temperature range of 200–400 °C. The results show that the best sensitivity and detection limit of the sample are related to acetone vapor in the studied temperature range. The ZnO thin film-based acetone sensor also shows a good reproducibility and stability at the operating temperature of 280 °C.